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    Wikipedia
    https://en.wikipedia.org › wiki › Invasive_species

    Invasive species - Wikipedia

    • An invasive species is an introduced species that harms its new environment. Invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or economic damage. The term can also be used for native species that become harmful to their native environment after human alterations to its food web. Since the 20th century, invasive speci… 展开

    Terminology

    Invasive species are the subset of established non-native alien or naturalized species that are a threat to native species and biodiversity. The term "invasive" is poorly defined and often very subjective. Invasive specie… 展开

    Causes

    Typically, an introduced species must survive at low population densities before it becomes invasive in a new location. At low population densities, it can be difficult for the introduced species to reproduce and maintain itself in … 展开

    Vectors

    Non-native species have many vectors, but most are associated with human activity. Natural range extensions are common, but humans often carry specimens faster and over greater distances than natural forces. An early human … 展开

    Adverse effects

    Invasive species can affect the invaded habitats and bioregions adversely, causing ecological, environmental, or economic damage.
    The European Union defines "Invasive Alien Species" a… 展开

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